public class test_4_25 {
    public static void main(String[] args) {
        int[][] arr = {{1,2}, {3,4}};
        for(int i = 0; i < arr.length; i++){
            for(int j = 0; j < arr[i].length; j++){
                System.out.println(arr[i][j]);
            }
        }
    }
}
